the first technology of its kind... mom and dad, i have great news. is now providing answers families need. siemens. answers. >>> building a profile of the bomber. what are the new details telling us about what happened at the boston marathon? stay with us. i'm telling you right now, the girl back at home would absolutely not have taken a zip line in the jungle. (screams) i'm really glad that girl stayed at home. vo: expedia helps 30 million travelers a month find what they're looking for. one traveler at a time. expedia. find yours. >>> it was a day of confusion and misinformation. it was a very active and productive day at the crime scene. investigators have identified solid leads from video evidence, including images of a person or persons carrying and dropping bags at the bombing scene. authorities say there's footage of a man who they think may have placed the bomb. they reportedly have the face but not the name of a potential suspect on video leaving the bag near the scene of the blast. an official saying the person was scene on surveillance cam